JPS596436Y2 - ultrasonic probe - Google Patents
ultrasonic probeInfo
- Publication number
- JPS596436Y2 JPS596436Y2 JP9651278U JP9651278U JPS596436Y2 JP S596436 Y2 JPS596436 Y2 JP S596436Y2 JP 9651278 U JP9651278 U JP 9651278U JP 9651278 U JP9651278 U JP 9651278U JP S596436 Y2 JPS596436 Y2 JP S596436Y2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic probe
- vibrator
- echo
- lead plate
- back side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
【考案の詳細な説明】
本考案はパルス巾の短かいエコーが得られる超音波探触
子に関するものである。[Detailed Description of the Invention] The present invention relates to an ultrasonic probe that can obtain echoes with a short pulse width.
最近、医療機器として、動いている心臓や腹部の断層像
をリアルタイムで見ることができる超音波断層撮影装置
が急速に普及してきている。2. Description of the Related Art Recently, ultrasonic tomography devices that can view tomographic images of a moving heart and abdomen in real time are rapidly becoming popular as medical equipment.
これは無侵襲性，危険性が少ない、低価格の割に得られ
る情報量が多いという特徴を有しているからである。This is because it is non-invasive, has little risk, and provides a large amount of information despite its low price.
超音波診断法には、パルス反射法，ドップラー法，透過
法があるが、現在実用化され、また研究の主流はパルス
反射法である。Ultrasonic diagnostic methods include the pulse reflection method, the Doppler method, and the transmission method, but the pulse reflection method is currently in practical use and the mainstream of research.
パルス反射法の原理は振動子（圧電素子）から１〜１０
ＭＨｚ程度の超音波のパルスを出し、異なる音響イン
ピーダンスをも二つの組識（物質）の界面からインピー
ダンス不整合によリエコーが返ってくるのを同じ振動子
で受信し、その強度でオシロスコープに輝度変調をかけ
、エコーの位置を表示するものである。The principle of the pulse reflection method is from the vibrator (piezoelectric element) to 1 to 10
An ultrasonic pulse of about MHz is emitted, and the same transducer receives the re-echo that returns from the interface of two tissues (substances) with different acoustic impedances due to impedance mismatch. It applies modulation and displays the position of the echo.
この超音波探触子において、重要な特性は感度と反射波
（エコー）のパルス巾である。The important characteristics of this ultrasonic probe are the sensitivity and the pulse width of the reflected wave (echo).
感度がよいということは、エコーの大きさが大きいとい
うこトテアる。Good sensitivity means that the size of the echo is large.
また、エコーのパルス巾が小さい程分解能の優れた探触
子となる。Furthermore, the smaller the pulse width of the echo, the better the resolution of the probe.
エコーのパルス巾を小ならしめるためには、振動子の振
動が速く減衰する必要がある。In order to reduce the pulse width of the echo, the vibration of the oscillator needs to be attenuated quickly.
本考案は、塑性ひずみによる軟かさかあって密度の大き
い鉛等の金属板を振動子の背面に貼り付けることにより
、ダンピング効果をもたらしぬ、パルス巾の小さな超音
波探触子を提供しようとするものである。The present invention attempts to provide an ultrasonic probe with a small pulse width that does not produce a damping effect by attaching a metal plate such as lead, which is soft due to plastic strain and has a high density, to the back of the transducer. It is something to do.
以下、図面とともに本考案の一実施例を説明する。An embodiment of the present invention will be described below with reference to the drawings.
図において、１は表面と裏面に電極２をもつ圧電素子よ
りなる振動子、３は鉛板である。In the figure, 1 is a vibrator made of a piezoelectric element having electrodes 2 on the front and back surfaces, and 3 is a lead plate.
そして最初振動子１の裏側に鉛板３を貼り付け、銅箔４
を有するフレキシブルプリント基板５で配線した後、超
音波を吸収するパッキング材６に貼り付け、振動子１、
鉛板３およびフレキシブルプリント基板５をダイヤモン
ドカツター等でｍ個に分割し、溝７を付けていく。First, a lead plate 3 is attached to the back side of the vibrator 1, and a copper foil 4 is attached.
After wiring with a flexible printed circuit board 5 having
The lead plate 3 and the flexible printed circuit board 5 are divided into m pieces using a diamond cutter or the like, and grooves 7 are formed.
その後、アース側の共通電極８を設け、それをフレキシ
ブルプリント基板５の一つの銅箔４に接続する。Thereafter, a common electrode 8 on the ground side is provided and connected to one copper foil 4 of the flexible printed circuit board 5.
このように塑性ひずみによる軟かさかあって密度の大き
い鉛板を振動子の裏側に付けることにより、鉛板がダン
ピング効果をなし、振動子の振動を抑制してエコーのパ
ルス巾を短かくする効果を出すのである。By attaching a lead plate, which is soft due to plastic strain and has a high density, to the back side of the vibrator, the lead plate has a damping effect, suppresses the vibration of the vibrator, and shortens the pulse width of the echo. It produces an effect.
以上のように本考案は、密度が高く塑性ひずみによる軟
かさのある鉛板等の金属板を振動子の裏側に付けること
により、振動子の振動を抑制してパルス巾の短かいエコ
ーが得られる探触子を提供することができるものである
。As described above, the present invention suppresses the vibration of the transducer and produces echoes with a short pulse width by attaching a metal plate such as a lead plate, which has high density and is soft due to plastic strain, to the back side of the transducer. It is possible to provide a probe that can be used.
図は本考案に係る超音波探触子の一実施例を示す要部斜
視図である。
１・・・・・・振動子、３・・・・・・金属板（鉛板）
、６・・・・・・パッキング材。The figure is a perspective view of essential parts of an embodiment of the ultrasonic probe according to the present invention. 1... Vibrator, 3... Metal plate (lead plate)
, 6...Packing material.
Claims (2)
度の高い金属板を貼り付け、その裏側にパッキング材を
さらに貼り付けた構造を有する超音波探触子。(1) An ultrasonic probe that has a structure in which a soft, high-density metal plate due to plastic strain is attached to the back side of the vibrator, and a packing material is further attached to the back side of the transducer.
の範囲第１項記載の超音波探触子。(2) The ultrasonic probe according to claim 1, which uses a lead plate as the metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9651278U JPS596436Y2 (en) | 1978-07-12 | 1978-07-12 | ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9651278U JPS596436Y2 (en) | 1978-07-12 | 1978-07-12 | ultrasonic probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5514867U JPS5514867U (en) | 1980-01-30 |
| JPS596436Y2 true JPS596436Y2 (en) | 1984-02-28 |
Family
ID=29030459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9651278U Expired JPS596436Y2 (en) | 1978-07-12 | 1978-07-12 | ultrasonic probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596436Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404489A (en) * | 1980-11-03 | 1983-09-13 | Hewlett-Packard Company | Acoustic transducer with flexible circuit board terminals |
| JPS60100952A (en) * | 1983-11-09 | 1985-06-04 | 松下電器産業株式会社 | Ultrasonic vibrator |
| JPH0613032B2 (en) * | 1988-08-26 | 1994-02-23 | 横河メディカルシステム株式会社 | Ultrasonic probe |
-
1978
- 1978-07-12 JP JP9651278U patent/JPS596436Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5514867U (en) | 1980-01-30 |
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